ASUS Vivobook X405UA-BV137R RAM upgrade specifications

ASUS Vivobook 14 Series X405UA-BV137R laptop features DDR4-SDRAM memory upgrade specifications with one SO-DIMM slot available for expansion. Maximum compatible RAM capacity reaches 24 GB through the single upgrade slot, operating at 2133 MHz frequency. Memory configuration comprises on-board soldered RAM plus one SO-DIMM slot, enabling memory expansion for enhanced system performance. Upgrade specifications are compatible with DDR4-SDRAM modules meeting the defined frequency and capacity parameters.

Additional Notes

• The system contains soldered on-board memory that cannot be removed, limiting total upgradeable capacity to 1 SO-DIMM slot rather than providing full memory flexibility.
• Installing a 16 GB module would reach the 24 GB maximum, but the on-board portion remains locked at its factory capacity, creating asymmetrical memory architecture.
• DDR4-2133 MHz speed represents an older standard; replacement modules rated for 2400 MHz or higher will downclock to 2133 MHz, eliminating performance gains from faster specs.
• Single-slot upgrades cannot leverage dual-channel memory bandwidth benefits, potentially reducing performance compared to systems with matched memory pairs.
• SO-DIMM form factor requires laptop-specific modules; desktop DDR4 DIMMs are physically incompatible and will not fit the slot.
• Warranty coverage depends on manufacturer policy; many OEMs allow SO-DIMM replacement without voiding coverage, but on-board memory damage from upgrade attempts would remain excluded.
• The fixed on-board allocation means memory performance bottlenecks cannot be resolved through configuration changes; system behavior is determined entirely by the factory memory split.